So, there are a few things I have noticed while playing Reach that kind of irk me and also hurt me. Sometimes both at the same time. Here are the following I'll list. They're not to nerf or buff any of the weapons or Armor Abilities, but ingame mechanics.
1: Crosshair Opacity vs. Killfeed Opacity: Killfeed opacity is too bold while the Crosshair opacity is too transparent. I'm assuming that the Crosshair opacity is around 25-30% while the Killfeed is around 85-100% opacity. It needs to be switched around since I (Along with many others on the Reach forum in the Bungie website) are havving problems seeing the crosshair from time to time.
2: The ban message: Make it appear only before the game or after, not in game. It gets annoying when you have to close it 20+ times in one game. Edit: Since people just read the OP and not read on, I'll add this in so you won't blame me for quitting. I live in a city where rolling blackouts are common. A rolling blackout basically means that whatever I'm doing, watching TV, playing Reach, exercising, etc. the power will go out. The economy is bad, so if you're telling me to move, try a different counter-argument. I also stated that my router sucks and I'm saving up to buy one. If you don't read past the third "Game" in this, then please don't respond.
3: Spawning: Sometimes you spawn without Armor abilities and you have to die just to get it back.
Those are all I can list for now, but I'll add more from what I see. There are a LOT of bugs in Reach that need to be fixed.